Sure thing, let's get straight to it. We start with 67 and we're going to multiply it by 20, which means adding 67 to itself 20 times.
Step 1: 0 + 67 = 67
Step 2: 67 + 67 = 134
Step 3: 134 + 67 = 201
Step 4: 201 + 67 = 268
Step 5: 268 + 67 = 335
Step 6: 335 + 67 = 402
Step 7: 402 + 67 = 469
Step 8: 469 + 67 = 536
Step 9: 536 + 67 = 603
Step 10: 603 + 67 = 670
Step 11: 670 + 67 = 737
Step 12: 737 + 67 = 804
Step 13: 804 + 67 = 871
Step 14: 871 + 67 = 938
Step 15: 938 + 67 = 1005
Step 16: 1005 + 67 = 1072
Step 17: 1072 + 67 = 1139
Step 18: 1139 + 67 = 1206
Step 19: 1206 + 67 = 1273
Step 20: 1273 + 67 = 1340

So, 67*20 = 1340